Renal: Rhabdomyolysis: Free MSRA Podcast

⚕️ FREE MSRA PODCAST – Rhabdomyolysis🎧 A clear, high-yield breakdown of this muscle breakdown condition causing AKI and electrolyte chaos – perfect for exam prep and real-life clinical scenarios.🧠 Key Learning Points📌 Definition• Rhabdomyolysis is the rapid breakdown of skeletal muscle, releasing intracellular contents like myoglobin, CK, and potassium into the bloodstream – which can lead to acute kidney injury (AKI) and life-threatening electrolyte imbalances.📌 Causes & Risk Factors• Trauma or crush injuries• Prolonged immobility (e.g. post-fall, unconsciousness)• Extreme physical exertion (e.g. marathons, military training)• Drug/toxin exposure – statins (especially with clarithromycin), alcohol, cocaine, ecstasy• Infections – flu, strep• Metabolic conditions – DKA, hypothyroidism, tumour lysis• Genetic disorders – McArdle’s, carnitine deficiencies🧠 Mnemonic: “PIG MEST” – Physical force, Immobility, Genetic, Medications, Exertion, Sepsis, Toxins📌 Pathophysiology• Muscle membrane damage → release of myoglobin, CK, K⁺, phosphate• Myoglobin clogs renal tubules → acute tubular necrosis (ATN)• Excess intracellular calcium → further muscle breakdown• Vicious cycle → electrolyte derangement, AKI, multi-organ stress📌 Symptoms• Muscle pain, weakness, swelling• Dark “tea-coloured” urine (myoglobinuria)• Fatigue, nausea, reduced urine output• Signs of AKI or compartment syndrome in severe cases🧠 Classic triad: muscle pain + weakness + dark urine – but all 3 present in <10%📌 Differential Diagnosis• Acute tubular necrosis (ATN) from other causes• Glomerulonephritis• Muscular dystrophies• Polymyositis / dermatomyositis• Urinary obstruction📌 Diagnosis• ↑ Creatine Kinase (CK) – often >10,000 IU/L• Urine dip: blood +ve but few/no RBCs → suspect myoglobin• Renal function: ↑ creatinine, urea• Electrolytes:– ↑ K⁺ (hyperkalaemia – emergency)– ↓ Ca²⁺, ↑ phosphate, metabolic acidosis• Urine myoglobin (not always available)🧠 CK = key diagnostic test; always check U&Es + ECG for K⁺ effects📌 Management• Aggressive IV fluids – ASAP! Prevents AKI• Correct electrolytes:– Hyperkalaemia: calcium gluconate, insulin + dextrose, salbutamol– Consider bicarbonate for urine alkalinisation• Treat underlying cause: stop statin, treat infection, manage trauma• Dialysis if AKI is severe or refractory• Monitor CK, renal function, fluid status closely🧠 Early fluids = best predictor of good outcome📌 Complications• AKI (acute tubular necrosis)• Hyperkalaemia → arrhythmias / cardiac arrest• Hypocalcaemia, hyperphosphataemia• Compartment syndrome – may need fasciotomy• DIC, liver enzyme elevation, metabolic acidosis• Chronic kidney disease (CKD) if delayed treatment📌 Prognosis• Excellent with early recognition and fluid resuscitation• Delay → risk of multi-organ failure, long-term renal damage, or rarely, death📎 More MSRA Resources for Rhabdomyolysis📝 Revision Notes:https://www.passthemsra.com/topic/rhabdomyolysis-revision-notes/🧠 Flashcards:https://www.passthemsra.com/topic/rhabdomyolysis-flashcards/💬 Accordion Q&A Notes:https://www.passthemsra.com/topic/rhabdomyolysis-accordion-qa-notes-2/🚀 Rapid Quiz:https://www.passthemsra.com/topic/rhabdomyolysis-rapid-quiz-2/🧪 Topic Quiz:https://www.passthemsra.com/quizzes/rhabdomyolysis/🎓 Full Course:https://www.passthemsra.com/courses/renal-for-the-msra/📣 All resources are part of the Renal for the MSRA course athttps://www.passthemsra.com – your high-yield, NICE-based revision hub 🚀Hashtags#MSRA #MSRARevisionNotes #MSRATextbook #MSRAQuiz #MSRAQuestionBank #MSRAFlashcards #MSRAQANotes #MSRAAccordions #MultiSpecialityRecruitmentAssessment #MSRAOnlineRevision #MSRARevisionWebsite #Renal #Rhabdomyolysis